Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.731857
Title: Control and manipulation of small molecules in the scanning tunneling microscope
Author: Holmes, Scott Andrew
ISNI:       0000 0004 6494 2507
Awarding Body: University of Birmingham
Current Institution: University of Birmingham
Date of Award: 2017
Availability of Full Text:
Access from EThOS:
Access from Institution:
Abstract:
In this thesis methodologies for manipulation and control of two different surface-molecule systems are explored. Thermal effects play a key role in all of the mechanisms studied. The first methodology studied is self-assembly of dimethyl-disulfide on Au(Jll). Conformational change and diffusion of Au-adatom dithiolate complexes are investigated over the temperature range 77 K to 200 K. The second manipulation methodology is non-local manipulation of Si(lll )-7x7: PhCI. Non-local desorption of the chemisorbed molecules by hole injection is studied in the temperature range 77 K to 293 K, and compared to previous results on the electron induced process in the same temperature range. It is found that desorption proceeds through the physisorbed state for both carriers, but that there is an additional mechanism which differs depending on the charge carrier. Non-local manipulation of physisorbed chlorobenzene is studied at low temperature, where a new species is found to be created in non-local manipulation experiments at 4.6 K. It is speculated that this is a result of efficient dissociation of the physisorbed molecules.
Supervisor: Not available Sponsor: Engineering and Physical Sciences Research Council (EPSRC)
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.731857  DOI: Not available
Keywords: QD Chemistry
Share: